
I.Suharyani et al / Indo J Pharm 5 (2023) 347-356
354
concentration of the extract will produce
a more acidic pH value and this can also
be caused because this red dragon fruit
extract has an acidic pH of 5. The results
of this pH measurement are in
accordance with the requirements for lip
pH, namely 4.5-6.5 (13). The results of
this pH measurement show that all lip
cream formulas are safe to use.
b. Homogeneity test is carried out to find
out whether there are coarse grains in the
preparation or not. Based on the tests
that have been carried out, all lip cream
preparations show that there are no
coarse grains in all formulas when
placed between glass objects. This result
indicates that the preparation is
homogeneous and safe to use.
c. c. The spreadability test was carried out
to see how fast the lip cream can spread
on the lips when used so that it is easier
to apply. The spreadability results
obtained for LC, LCE5, LCE10 and
LCE15 preparations were 5.14±0.02 cm;
5.25±0.02 cm; 5.33±0.03 cm; and 5.34±
0.17 cm, respectively. The higher the
concentration of the extract used, the
more liquid the consistency and the
easier it is to apply. This spreadability
test stated that all the results of the
formula met the requirements, namely 5-
7 cm (12).
The DPPH method is used because
the method is simple, easy, requires only a
few samples, is fast and sensitive. The
principle of this test is to measure the
damping power of an extract or sample
against DPPH free radicals. For
comparison, use vitamin C, because
vitamin C is a natural antioxidant that has
the function of capturing free radicals.
The higher concentration of the
extract used as in LCE15 with an extract
concentration of 15%, the smaller the IC50
value obtained, which means the more
active the power of antioxidant compounds
that can be used to fight DPPH as free
radicals. Vitamin C has very strong
antioxidant activity because the IC50 is less
than 50 ppm, while the three formulations
have an IC50 value of more than 150 ppm
which means they have moderate
antioxidant strength. In testing the
antioxidant activity, temperature, light and
pH of the sample greatly affect the results
of the antioxidant activity test.
5. Conclusion
Based on the results of the research that has
been described, it can be concluded that red
dragon fruit extract can be used as a natural
coloring agent in lip cream preparations by
producing colors from light brown to dark
brown. The antioxidant activities for LCE5,
LCE10, and LCE15 were expressed in IC50
values, respectively, 195.26 ± 0.40
(moderate), 174.77 ± 0.34 (moderate),
168.27 ± 0.60 ( currently). LCE15 is the
best formula because it has a smaller IC50
value compared to LCE5 and LCE10,
which means that the lower the IC50 value,
the higher the antioxidant activity. Based
on the research results obtained, it shows
that red dragon fruit extract can be used as
a natural dye in lip cream preparations by
producing colors from light brown to dark
brown and has antioxidant activity that can
be used to reduce free radicals..
6. Acknowledgements
We would like to thank Sekolah Tinggi
Farmasi Muhammadiyah Cirebon for
supporting this study.
References
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Optimalisasi Basis Untuk Formulasi
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